Improvement in machines for making paper board



UNITED STATES PATENT OEEIGE.

JOHN F. JONES,TOF ROCHESTER, NEW YORK.

Specification forming' part of Letters Patent No. 49,] 19, dated August 1, 1865.

To all whom it 'may concern:

Be it known that I, J OHNFEANKLiN J oNEs, of Rochester, in the county of Monroe and State of New York, haveinvented certain new and useful Improvements in Machines for Making Paper Board; and I do hereby declare that the following is a full and exact description thereof, reference beinghad to t-he accompanying drawings, making part oi' this specification.

Figure l is a plan of my improved machine; Fig'. 2, a side elevation thereof; Fig. 3, it central longitudinal vertical section; Fig. 4, a plan of the cylinder detached; Figs. 5 and 6, views showing the method ot adjusting the boxes that support the pressing-rollers,l

Likeletters ot' reference indicate corresponding parts in all the figures.

Theobject of myimprovement is to produce paper boardin a continuousorindelinitelength; and the invention consists, first, in the employment of a perforated cylinder, in combination with an endless wire-mesh apron and pressure rollers, for forming paperboard in a continuous orindelinite length; second, in theemployment of a suction box or boxes within the cylinder formed of rollers that act ,i n connection with the cylinder to draw the water from the web above.

In paper-making, two distinct classes ofmacliines are employedtflrst, thecylindenmachine, in which a cylinder takes the pulp from a vat in Wh-ichit runs and deposits it upon a felt that passes between press-rollers 5 and, second, the Fourdrinier machine, in which a wire cloth apron is employed, which receives the layer ot' pulp and deposits it upon the felt,.to be run through the press rollers in the same manner. My presentimproved machine conibines in a degree the qualities of both these classes of machines.

As represented in the drawings, a suitable f1 ame, A, is employed, having mounted in it, in any desirable manner, a large hollow cylinder, B, that is preferably composed of two end rims or rings, a a, Fig. 4, connected by longitudinal rods b b, situated at suitable distance apart, over which rests a covering, c, of wirecloth, filling the whole space between the rings.

In order to admit the discharge of waterfrom a receptacle or trough within the cylinder (presently to be described) I prefer to leave the ends of the cylinder entirely open, and to support said cylinder on friction-rollers d d,

resting under its rims ea at each` end,said friction-rollers being pivotedon circular station ary bearings C C, connected with the frame on each side of the machine, within which the cylinder revolves; but any equivalentmeans of supporting the cylinder and allowing ita.`

free revolving motionmay bel employed.` i, l

The cylinder mayreceive motion by any de-` sirable means, that represented in the drawings being a spur-gear, e, on one ot' its rims, into which meshes a`pinion,f. z"

Around the cylinder B, in a circle and at suitable distance therefrom, are situated pressing-rollers D D D, whosejournals rest in boxes g g, Figs. 5 and 6, which` in `turn rest'in` the bearings G G, or equivalent, and are adjusted i up and down, to separate the rollers more or less from the cylinder, by means of pressure-` screws h hand coiled springs 4i i', or some equivalt-nt device. v t

The device in Fig. 5 represents that connected with the rst or induction roller at the` top, and in this case the spring t' is under the box g, so as to force the rollen upward to allow t the entrance of the pulp between it and the cyl-` inder or bed. l l

The device in Fifr. `6 re )resents that connected with the other rollers, the spriingfsz bet in g on top of the boxes to force the rollers down 1 to their work, andthe screws being used to hold the boxes when the pressure is greats The se` ries of rollers may extend around the cylinder` to as great an extent as desired, bntinthe drawings they are shown as extending` only about three-quarters the distance. Iprefer to make two or three of the rollers at` the top dip! ping-rollers, provided with dipperskk,substa11 tially of the forni shown in Figf, which discharge the water that rises around them outinder or bed'B being suiicient to allow thenecessary depth ofpulp to form board of the ddsired thickness. It will be seen that the screws and springs ht' allow the thickness'ofboard to be varied atpleasure. The pulp enters through a hopper or trough, G, and iscarried between the cylinder or bed B and the endless wiremesh apron E, where, by the revolving motion of said cylinder and the rollers D D D, it is compressed into a web, x,(shown in dotted lines,) and is carried round to the opposite end of the apron, where it is taken off by 'a felt, l, and conveyed between suitable press-rollers, drying-cylinders, &c., in the usual way. By this means I am enabled to form paper board in a continuous or indefinite length and of any desired thickness,instead ofin separate sheets of limited size, as in ordinary machines now in use.

There are several obvious advantages in the arrangement above described.

First. 'Ihe circumference ofthe cylinder B, which forms the bed on which the web .is pressed, is equal in extent to the same length in the form ot'an endless apron, (asin the Fone drinier machine, but in the form of a cylinder it is much more compact and less btilky than in the form ot' an apron, and therefore the frame-work and machinery, instead of occupying many feet inlength, as usual, occupy a very small compass,which not onlyinsures economy in cost of building, but saves labor in operating and attending.

Second. The wirecloth c being rigidly secured to the cylinder, and the latter revolving instead ofthe wire itself receiving an independent motion, the great friction and wear and the irregular motion that attends the employment of anindependently traveling wire apron are obviated. lin the use ofthe apron it is necessary, in order to insure its running easily, to allowit a certain degree of looseness, to pass round its rollers. rIhis of course makes its action irregular, and the web cannot be pressed so perfectly upon it as would be the case if it were taut. In my device the wire can be made as taut as desired around the cylinder. In the use of the apron the wear soon renders it useless,4 while in my device, there being no friction of the wire and consequently not much wear, the same is very enduring.

Third. The employment ofthe endless apron E and the rollers D, in connection with the cylinder, enables me to form board of any desired thickness and in a continuous length very rapidly, while the water that is expressed is allowed to escape through between-the rods Within th'e hollow cylinder B is situated a shallow receptacle or trough, H, preferably occupying the Whole diameter of the interior, and having asuitable discharge-spout, m, passing out at one end, as clearly represented in Figs. 2 and 3. This receptacle or trough catches such water as is expressed from the pulp at the top of the cylinder and passes through between its rods b b.. Its employment is absolutely essential, for otherwise the Water would pass through to the bottom ot' the cylinder and rewet the web below.

As the ordinary suctioirboxes, such as are 'employed in the Fourdrinier machine, cannot he used in connection with the cylinder I have described, I employ one of a peculiar arrangement and construction. .lt consists ot' three grooved or corrugated rollers, I I K, situated within the cylinder at its top and having end bearings, p p, and so arranged as to inclose a space, fn, from which opens an escape-pipe, q. Ihe upper rollers, IVI, reach to the surface of the wire c, and the lower roller, K, meshesv with the two upper rollers, I I, in order to keep the inclosed space tight. I prefer to use india-rubber rollers, but any other that will accomplish the same purpose may be employed. It will be seen that by the use of this arrangement I accomplish the same effect asin the ordinarysuction-box, while my device is adapted to the special use of the cylinder B. 1

I employ a vibrating orreciprocating bar, L, Figs. l and 3, in a suitable position in the hopper1 for the purpose ot' intervreaving the fibers bt' the pulp and properly feeding the same into the space between th cylinder Iand endless apron. I prefer to form this bar with alternate ribs or rings fr 'r and intermediate spaces, s s, as shown, so as to catch and hold the fibers; but, it' desired, this arrangement may be modified and still produce the same result. This bar receives an vend motion by l l any desirable means, that represented in the drawings being a pitman, jointed thereto outside the frame, and operated by beingv connected with suitable mechanism. The action of this bar is somewhat similar to felting, the object being to interwea've or intertwine the fibers so as to make the web as strong in one direction as another. In the ordinary Fourdrinier machine this effect is accomplished by giving a lateral shaketo the endless apron, butin my present machine this cannot be done, as the cylinder B is stationary. rIhe employment ofthe vibrating bar L accomplishes the effect perfectly, while the device itselfis of the simplest character.

VWhat Iclaim as my invention, and desire to secure by Letters Patent, is-

l. The combination of an open-wire mesh or perforated cylinder, B, wire apron E, and pressure-rollers D, for forming paper board in a continuous or indefinite length, substantially as herein set forth. I

2. In paper-making machines, the combination of the suction box or Vboxes composed ot' the rollers I I and K, operating snbstantially Witnesses:

R. F. OsGooD, J AY HYATT. 

